Support bracket



FIG. 1 is a isometric view of a support bracket;

FIG. 2 is a front view of the design of FIG. 1;

FIG. 3 is a side view of the design of FIG. 1; and,

FIG. 4 is a top view of the design of FIG. 1.

Any broken lines in the drawings depict probable environment only and form no part of the claimed design. 

CLAIM The ornamental design for a “support bracket”, as shown and described. 